RATIONALE: Monoclonal antibodies, such as bevacizumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Bevacizumab may also stop the growth of tumor cells by blocking blood flow to the tumor. Biological therapies, such as aldesleukin, may stimulate the immune system in different ways and stop tumor cells from growing. Giving bevacizumab together with aldesleukin may kill more tumor cells.